protobuf security update

3.19.6-15 - Fix CVE-2026-0994: nested Any messages bypassing recursion depth limits 3.19.6-14 - Disable tests during build that are flaky 3.19.6-13 - Rebuilt for tests directory 3.19.6-12 - Copy patch from c9s to make emacs dependency optional Resolves: RHEL-93236...